mikeash

import Foundation

let timer = DispatchSource.makeTimerSource(queue: .main)
timer.scheduleRepeating(wallDeadline: .now(), interval: .milliseconds(100), leeway: .milliseconds(100))
var count = 0
timer.setEventHandler(handler: {
    count += 1
    print("hello \(count)")
    if count >= 10 {
        exit(0)

mikeash

Keybase proof

I hereby claim:

• I am mikeash on github.
• I am mikeash (https://keybase.io/mikeash) on keybase.
• I have a public key ASCv3cdmBXff1Ml-lYYQ-qcFZBVjSttjxmndX-XLa-Lb8wo

To claim this, I am signing this object:

mikeash

// $ swift -O test.swift
// native: 41.0220462589987 seconds
// NSMutableSet: 0.0347055729998829 seconds
// native single set: 0.00811006900039501 seconds
// NSMutableSet single set: 0.0452864170001703 seconds

import Foundation

var a: [Int: [Int: Set<Int>]] = [:]
var b: [Int: [Int: NSMutableSet]] = [:]

mikeash

// from https://github.com/swansontec/map-macro/blob/master/map.h

/*
 * Copyright (C) 2012 William Swanson
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies

mikeash

        function HTMLEscape(s)
        {
            return s.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
        }
        
        function CommentPreview()
        {
            $("#commentPreviewLabelArea").html("<b>Loading comment preview....</b><p>");
            $.post("/commentsubmit.py", $("#commentForm").serialize() + "&preview=true",
                function(data) {

mikeash

func responderForType<T>(from: UIResponder) -> T? {
  var current = from
  while let next = current.nextResponder() {
    if let result = next as? T { return result }
    current = next
  }
  return nil
}

mikeash

import Darwin

struct S {
    var whatever: AnyObject? = nil
    
    mutating func stuff() {
        withUnsafePointer(&whatever, {
            for offset in 0.stride(to: 128, by: sizeof(AnyObject.self)) {
                let ptr = UnsafePointer<UInt8>($0) - offset
                if malloc_size(ptr) > 0 {

mikeash

#!/usr/bin/swift

import Foundation

class ValueWithDestructor<T> {
    var value: T
    let destructor: T -> Void
    
    init(value: T, destructor: T -> Void) {
        self.value = value

mikeash

import Foundation

struct NumberOrObjectButNotNSNumberObjects {
    private var storage: AnyObject? = nil
    
    var object: AnyObject? {
        get {
            return (storage is NSNumber) ? nil : storage
        }
        set {

mikeash

import Foundation
protocol Stringable {
    var string: String { get }
}
extension String: Stringable {
    var string: String {
        return self
    }
}
extension Dictionary where Key: Stringable {